Core holding mechanism and label adjusting guide for roll-shaped label of label sticking machine

Abstract

A core holding device of a label sticking machine capable of assuredly holding a roll-shaped label or a core thereof, simplifying an operation for installing and removal thereof, and forming it simple and compact. Characterized in that core holding members for holding the roll-shaped label are of a rotating type, each of the core holding members is energized by a spring, a pair of spring plates and the pair of core holding knob members are installed between right and left side plates.

What is claimed is:  
     
       1. In a labeler having a pair of left and right side plates and a label roll conveyance path formed between the side plates and which feeds the label roll through the conveyance path as a strip to attach labels, 
       a label roll core holder having  
       a pair of left and right spring plates provided to face each other across a label holding space between the pair of left and right side plates and,  
       at tips of the spring plates, a pair of left and right core holding lug members for holding the label roll,  
       the core holding lug members each having a rotation shaft, a core holding portion adapted for holding the label roll and located nearer the label holding space than the rotation shaft, and a lug portion that is located on the opposite side of the rotation shaft from the core holding portion and projects outward of the side plate, and  
       the spring plates being capable of supporting the core holding portions of the core holding lug members in a core holding attitude.  
     
     
       2. A label roll core holder in a labeler according to  claim 1 , characterized in being provided with auxiliary springs for supplementing the biasing force of the spring plates. 
     
     
       3. A label roll core holder in a labeler according to  claim 1 , characterized in that the core holding portions of the left and right core holding lug members have identical shapes. 
     
     
       4. A label roll core holder in a labeler according to  claim 1 , characterized in that core retaining projections are formed on the core holding portions of the core holding lug members. 
     
     
       5. A label roll core holder in a labeler according to  claim 1 , characterized in that the spring plates have, at locations thereof apart from said tips toward their middle portions, retaining projection portions capable of holding the core in cooperation with the core holding portions. 
     
     
       6. A label roll core holder in a labeler according to  claim 1 , characterized in that the core holding portions of the left and right core holding lug members have different shapes.